description Ametrine Overview
Ametrine is a naturally occurring variety of quartz that shows distinct zones of purple amethyst and yellow or orange citrine within the same crystal. The color division results from differences in oxidation conditions affecting iron in the quartz during crystal formation. Commercial ametrine is strongly associated with Bolivia, especially material from the Anahí mine, and is cut for jewelry and mineral collections because of its contrasting two-color appearance.
help Ametrine FAQ
What is ametrine?
Ametrine is a variety of quartz with distinct zones of purple amethyst and yellow or orange citrine. It is named for the combination of those two quartz colors.
Why does ametrine have purple and yellow zones?
The color division results from different oxidation conditions affecting iron in the quartz during crystal formation. Different parts of one crystal therefore develop amethyst and citrine colors.
Is ametrine natural or treated?
Natural ametrine exists, but quartz can also be treated to imitate the color zoning. Buyers should ask for reliable disclosure and documentation when origin or treatment matters.
How is ametrine cut?
Ametrine is often cut to display the boundary between its purple and yellow zones. The cutter must orient the stone carefully so both colors remain visible from the front.
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